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8 Sheets-Sheet 1.

L. G. GROWELL.

SHEET DELIVERY APPARATUS.

(No Model.)

Patented Dec. 15, 1885.

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- L. 0. GROWELL.

SHEE]? DELIVERY APPARATUS.

No. 332,236. Patented Dec. 15, 1885.

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(No Model.)

L. 0. CROWELL.

SHEET DELIVERY APPARATUS.

No. 332,236. Patented Dec. 15, 1885.

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(No Model.)

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SHEET DELIVERY APPARATUS.

No. 332,236. Patented Dec. 15, 1885.

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(No Model.) 8 Sheets- Sheet 5.

L.. G. GROWELL.

SHEET DELIVERY APPARATUS.

Patented Dec. 15, 1885.

(No Model.) 8 SheetsSheet 6. L. G. GROWELL.

SHEET DELIVERY APPARATUS. N0.- 332,236. Patented Dec. 15, 1885.

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SHEET DELIVERY APPARATUS. No. 332,236. Patented Dec. 15, 1885.

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(No Model.) 8 Sheets-Sheet 8. L. 0., (JROWBLL.

SHEET-DELIVERY APPARATUS.

No. 332,236. Patented Dec. 15, 1885.

71216676 47 Inve-rUEO-r N. PEYERS. Phuwumagn mr. Wnhinghn. 0.0.

UNITED STATES LUTHER O. OROYVELL, OF BROOKLYN, ASSIGNOR TO B. HOE &

PATENT OFFICE.

NEW YORK, N. Y.

SHEET-DELIVERY APPARATUS.

SPECIFICATION forming part of Letters Patent No. 332,236, dated December15, 1885.

Application filed Octobcr23, 1884. Serial No. 146,256. (No model.)

To all whom it may concern:

Be it known that I, LUTHER G. CROWELL, a citizen ofthe United States,residing at Brooklyn, county of Kings, and State of New York, haveinvented certain new and useful Iniprovements in Sheet DeliveryApparatus, fully described and represented in the followingspecification and the accompanying drawings, forming a part of the same.

In United States Letters Patent N 0. 269,021, granted December 12, 1882,I have shown and described a folding delivery apparatus which is adaptedto operate in connection with a web perfecting printing machine todeliver the printed product in sheets, or associated pairs of sheets,having two parallel transverse folds, or in half sheets folded oncetransversely. The mechanism shown in said Letters Patent by which thisis accomplished consists, essentially, of two folding and cuttingcylinders, each of which is provided with a pair of cooperatingfoldingrolls, and is operated, when sheets or associated pairs of sheetsare being delivered, to impart one of the two parallel transverse foldsto each sheet or pair of sheets, and when half-sheets are beingdelivered to impart the single transverse fold to alternate sheets.

The present invention relates to a mechanism having many of the generalcharacteristics of that shown in the Letters Patent referred to, itbeing the object of the invention to simplify said mechanism in manyofits details, and also to provide means by which the full sheets, orassociated pairs t full sheets, may, when desired, be given alongitudinal fold after they have received the first and before theyreceive the second transverse fold.

To these ends the invention consists in Va rious details of constructionand combinations of mechanisms, all of which will be hereinafter sofully explained and particularly pointed out as to render a furtherpreliminary description unnecessary.

In the accompanying drawings, Figure 1 is a sectional elevation of adelivery mechanism embodying the present invention, the sheet laying orpiling mechanism, and also the supporting frame-work and the gears forcommunicating motion to the various omitted. Fig. 2 is a similar viewshowing the parts adjusted to the proper position to operate uponhalf-sheets. Fig. 3 is an end elevation, looking from the right of Figs.1 and 2, the parts being in the position shown in Fig. 2. Fig. 4 is apartial plan view of the mechanism, taken upon the line 00 a: of Figs. 2and 3. Fig. 5 is a view similar to Figs. 1 and 2, showingthelongitudinal folder arranged parallel with instead of at right anglesto the transverse folding mechanism. Fig. 6 is a plan view ofthelongitudinal folding mechanism when the same is arranged as shown inFig. 5. Fig. 7 is a partial plan view of the mechanism, taken upon theline so 00 of Fig. 5. Fig. 8 is a partial side elevation of the longitudinal folder, the same being taken upon the line 2 z of Figs. 5 and 6.Fig. 9 is a front elevation of the sheet laying or piling mechanism; andFig. 10 is a side elevation of the same, taken upon the line 00 x ofFig. 9.

Referring to said drawings, it is to be understood that the deliverymechanism therein shown comprises two transverse folding mechanisms,which in the embodiment shown consist of a rotating cylinder providedwith two rotating folding-blades and two pairs of cooperating rolls, alongitudinal .folding mech anism which is arranged to act upon thesheets after they have been acted upon by the first and before they havebeen acted upon by the second of the transverse folding mechanisms, asheet-conveying mechanism consisting of tapes and pulleys, by which thesheets are delivered from the first transverse folding mechanism to thelongitudinal folding mechanism, and thence to the second transversemechanism, or directly from the first to the second of the transversemechanisms, and a sheet laying or piling mechanism.

Referring particularly to Fig. 1, it is to be understood that the web ofpaper, after having been perfected by any common form of web-printingmechanism, is entered between the cutting-cylinders 100 101, whichoperate in the usual manner to partially sever the web upon the linesbetween the printed sheets. After passing the cylinders 100 101, the webparts, being V is entered between the series of tapes 8 9, which areaccelerated in the usual manner,so as to complete the severance-of thesheets from the web, and provide proper working-spaces between them intheir line of travel.

The tapes 8 9 are arranged as follows: The tapes 8 pass around pulleys10; thence around pulleys 11 12; thence for a short distance in contactwith the folding-cylinder 102 and between the pair of folding-rolls1314; thence around pulleys 17; thence upward around pulleys 18, returningaround pulleys 20. The tapes 9 pass around pulleys 21; thence aroundpulleys 11 12; thence around the folding-cylinder 102, returning aroundpulleys 22. By'this arrangement it will be seen that the successivesheets severed from the web are carried by the tapes 8 9 onto thesurface ofthe folding-cylinder 102. This folding-cylinder is providedwith two rotating folding-blades, 23 24, which are located at oppositepoints upon the cylinder, and are constructed and operated in the usualmanner, and with two pairs of folding-rolls, 13 14, 15 16, with whichthe blades 2324 co-operate to fold the sheetsfrom the cylinder. Thiscylinder is also provided with th ree'sets ofgrippers, 25 26 27, whichare also of the usual construction and operated in the usual manner,thesets 25 26 being located at opposite points upon the cylinder,betweenthe blades 23 24, while the set 27 is located just in the rear of theblade 24. The purpose of this arrangement will be made clear when theoperation of the mechanism is explained.

The folding-rolls 13 14 and 15 16are provided with three series ofcooperating tapes, 5 6 7, which are arranged as follows, and which,together with the tapes 8, act'to convey the folded sheets away from therolls: The tapes 5 pass around the roll 14; thence around pulleys 28,located directly beneath the pulleys 17 and arranged to turn looselyupon a transverse shaft, 94; thence downward around pulleys 29, whichare mounted upon a shaft journaled in the ends of a pair of arms, 30,extending from the shaft 94; thence inward around pulleys 31;thenceupward around pulleys 32, and downward again around adjustablepulleys 33, returning around pulleys 34. The pulleys 32 34 are mountedupon shafts which are journaled in brackets 91, secured to the sideframes of the machine, as shown in Figs. 1, 2, 3, and 5, while the shaftof the pulleys 33 is mounted in arms extending from a rock-shaft, 40,which is journaled in the side frames of the machine, and is providedwith means by which the pulleys can be' shifted so as to keep the tapesat the proper tension. The tapes 6 pass around pulleys 35, located infront of. the pulleys 28; thence downward around the pulleys 29; thencebeneaththe cylinder 102 and aroundthe folding-roll16; thence outwardabove pulleys 36 44, and around-pulleys 37; thence upward around pulleys39, mounted upon arms extending from a rockshaft, 92,which is journaledin the side frames of the machine, and is provided with an arm orhandle, 93, by which the pulleys can be shifted so as to keep the tapesat the proper tension; thence rearward, returning around pulleys 38,which are mounted upon a shaft which is journaled in the ends of thearms 30. The tapes 7 pass around the folding-roll 15; thence beneath thefoldingroll 16, and outward above the pulleys 36, and around the pulleys44, returning around pulleys 41. A series of stationary guides, 43, arelocated between the pulleys 31 and the cylinder 102, so as to co-operatewith the tapes 6 in conveying the sheets from said pulleys to thecylinder. As the sheets emerge from between the pulleys 37 44,

they pass between stationary guides 45 46 onto the surface of a rotarycarrier or fly, 103, (see Figs. 9 and 10,) which is similar inconstruction to that shown in United States Letters Paten't'No. 281,754,dated July 24, 1883, which operates to pile the sheets upon a series ofslowly-moving tapes, 47, to be conveyed from the machine. The carrier orfly is provided with three sets of grippers, 51, which are operated by astationary cam, 52, in the usual manner, to take and release the sheetsdelivered to the carrier at the proper times, and with a series ofcooperating stops, 53, the ends of which enter circumferential grooves54, formed in the carrier, as shown in Fig. 9. The stops 53 are locatedjust in advance of the axis of the carrier 103,-so as to arrest thesheets as they are released by the grippers 51. and prevent them frombeing carried beyond the proper point. In the structure shown in theLetters Patent referred to the successive sheets were pressed away fromthe carrieror fly, so as to prevent them from fouling with the incomingsheets,

by means of projections formed upon the carrier just in advance of thegrippers. 3 In. the present case, however, these projections are omittedfrom the carrier, the same function being performed by projections 55,formed upon the backs of the grippers. By forming the grippers in thismanner, so that they will perform the function of the projections shownin the forinerstructure, the construction of the carrier is simplified,and an equally effective means is provided for keeping the successivelydelivered sheets pressed away from the carrier. The carrier or fly 103is provided with a series of short co-operating tapes, 48, which passaround pulleys 49 50 and serve to hold th-e'leading ends of the sheetsonto the carrier until taken by the grippers.

The sheet laying or piling mechanism just described may also be providedwith mechanism such as shown in my application for Letters Patent filedOctober 6, 1884, No. 144,808, to cause irregularities in the pile ofsheets, so as to permit it to be divided into lots containing somepredetermined number without the necessity of'counting.

The mechanism thus far described is, as will hereinafter appear,capacitated to deliver full sheets,or two or more associated full sheetswith two parallel transverse folds, or half sheets folded oncetransversely.

While the full-sheet product, when deliveredin this form, is suitablefor many pur- .poses, yet it is .sometimes desirable, particularly wherethe sheet is of large size or is printed with eight pages, that itshould be folded to smaller dimensions. It is therefore desirable thatthe apparatus should be provided with mechanism by which, when desired,

the full-sheet product can be delivered with one longitudinal fold, inaddition to the transverse folds just mentioned, and that this mechanismshould be so arranged that this longitudinal fold will be imparted afterthe first and before the second of the transverse folds. To effect thisa switch, 56, (see Fig. 1,) is located between the pulleys 17 28, and isarranged so that the sheets folded between the rolls 13 14 may bedirected either into the bite of the tapes 5 6, to be conveyed directlyto the folding-rolls 15 16, or into the bite of the tapes 8 and aco-operating series of tapes, 4, to be conveyed to the longitudinalfolder104, to be afterward returned to the rolls 15 16, as willhereinafter appear.

The longitudinal folder 104, as herein shown, is of substantially theconstruction shown and described in United States Letters Patent No. 284619, granted July 17, 1883, although it may be of the constructionshown in my application for Letters Patent filed February 8, 1884, No.120,116, or of any other approved form. It is provided with the usualrolls, 63 64, between which the sheets pass as they leave the folder,and with suitable tapes, as the pairs or series 2 3, which operate toconduct the sheets over its surface and between the rolls 63 64 and tothe subsequent folding mechanism.

The folder 104 may be so arranged that the rolls 63 64 will be eitherparallel with or at right angles to the cylinder 102. As shown in Figs.1, 2', 3, and 4, it is so arranged that the rolls 63 64 are at rightangles to the cylinder.

When the folder is in this position,its base is parallel with thecylinder 102, and the tapes 4, which co-operate with the tapes 8 toconduct the sheets from the pulleys 17 28 to the folder, are arranged asfollows: These tapes pass around pulleys-42,1ocated just above thepulleys 35 and in front of the pulleys 17; thence upward around pulleys57; thence around pulleys 58, located just at the base of thelongitudinal folder, returning around pulleys 59 60.

The length-of thepathway formed by the tapes 4 8, and also the tensionof said tapes, can be regulated at pleasure by means of a series ofpulleys, 61,which are mounted upon the ends of adjustable arms 62,extending from a transverse shaft, 75. It will be observed that when thefolder is arranged in this position the sheets are necessarily so turnedthat as they emerge from the rolls 63 64 they are moving 1 in a plane atright angles to that in which they have previously moved, and this factmakes it necesssary, in order to present the sheetsasecond time to thecylinder 102 to receive their third fold, that they should be pulleys57, and downward across the face of the folder 104, (see Fig. 2,)passing around one of its turning'edges; thence inward between the rolls63 64; thence laterally around the turning-bar 65, (see Figs. 1, 2, and3,) and backward around pulleys 67, located directly beneath the pulleys60, returning around pulleys 68 69, as shown in Figs. 2 and 3. The tapes3 pass around pulleys 19; thence above the pulleys 57 and downwardacross the face of the folder 104, passing around its oppositeturning-edge, (see Fig. 3;) thence inward between the rolls 63 64, wherethey unite with the tapes 2; thence laterally beneath the tapes 2 andaround pulleys 70; thence backward around skew-pulleys 72, (see Fig. 4,)returning around pulleys 68 69. The space between the pulleys 35 67 isbridged by stationary guides 73,which co-operate with the tapes 4 tocarry the sheets from the pulleys 60 67 to the pulleys 35 42. The spacebetween the pulleys 70 and the turning-bar is bridged by stationaryguides 86, (see Figs. 2 and 4,)which are arranged to support the sheetsagainst the tapes during their passage from the pulleys to the bar. Theforward ends of these guides are secured to the turning-bar,and theirrear ends are secured to a longitudinal bar, 71, one end of which issecured to the turning-bar and the other to a bar extending transverselyof the machine. The space between the bar 65 and the pulleys 60 is alsobridged by like guides, 87,which lie directly above the tapes 2. Therear ends of these guides are secured to the turning-bar and theirforward ends to a bar, 88, extending transversely of the machine.

The operation of the apparatus just described is as follows: If it isdesired to deliver the product in the form of full sheets having twoparallel transverse folds only, one of the knives in thecutting-cylinders 100 101 will be removed, the shaft 94 will be adjustedso as to bring the arms 30 to the position shown in Fig. 1, and securedin said position by means of the handle or lever 74, the pulleys 33 39being suitably adjusted to give the tapes 5 6 the proper tension, thegrippers 26 will be rendered inoperative, and the switch 56 will besecured in the position shown in said figure, so as to direct the sheetsfrom between the tapes 5 8 into the bite of the tapes 5 6. As

the end of the partially-severed web passes forward between the tapes 89, said tapes be ing accelerated, as before stated, will complete theseverance of the sheets from the web and provide the necessary workingspaces between them. As the end of the first sheet passes around thepulleys 12 and arrives upon the surface of the cylinder 102, it will betaken by the grippers 27 and carried forward upon said cylinder untilthefolding-blade 23 arrives in proper position to fold said sheet off fromthe cylinder into the bite of the rolls 13 14, at which time saidgrippers will be operated to release the leading end of the sheet, andsimultaneously therewith the blade 23 will be operated, so as to givethe sheet its first transverse fold between the rolls 13 14, from whichrolls the sheet, now folded once transversely, will pass forward betweenthe tapes 5 8, and be directed by the switch 56 into the bite of thetapes 5 6,to be presented to the underside of the cylinder 102. When thecylinder has completed one revolution, the leading end of the secondsheet will have arrived upon its surface, and the grippers 27 will beagain operated so as to take the sheet, and the operation just describedwill be repeated. Just before the second sheet is folded off thecylinder by the blade 23 the leading end of the first sheet which hasbeen directed into the bite of the tapes 5 6- will emerge from beneaththe guides 43,fand will be taken by the grippers 25 and carried forwardupon the surface of the cylinder 102 until the blade 24 arrives inposition to fold the same between the rolls 15 16, at which time thegrippers 25 will be operated to release the sheet,and the blade 24operated to foldthe same into the bite of said rolls, as indicated inFig. 1, thus giving to the sheet a second transverse fold parallel tothe first. As the leading end of the second sheet emerges from beneaththe guides 43, the grippers 25 will have again arrived in position totake said sheet, and the operation just described will be repeated, andthus the sheets will conti nue to be presented in succession to each ofthe two folding-blades, so as to receive two parallel transverse folds.From the rolls 15 16 the twice-folded sheets will pass forward betweenthe tapes 6 7, and be projected between the guides 45 46 and onto thesurface of the carrier 103, as shown in Fig. 10., to be taken by thegrippers 51 and laid upon the tapes 47.

' if it is desired that the sheets, in addition to the two transversefolds just described, shall receive a longitudinal fold between the twotransverse folds, the switch 56 will be shifted so that the sheets,instead of being directed from the tapes 5 8 into the bite of the tapes5 6, will be directed into the bite of the tapes 4 8, to be conveyed tothe longitudinal folder. The sheets then, as they are folded by theblade 23 between the rolls13 l4,instead of passingdi-rectly to the underside of the cylinder 102,will pass upward between the tapes 4 8, and beconveyed across the face of the longitudinal folder 104 and between therolls 63 64' by the tapes 2 3, where they will receive a second fold atright angles to the first fold. Afterpassing the rolls 63 64 the sheetsthus folded will be conveyed bythe tapes 2 3 around the turning-bar 65,and be presented in proper position between the pulleys 67, by whichthey will be advanced to the pulleys 35 42, from which they will bedirected by the switch 56 into the bite of the tapes 5 6, to be conveyedto the under side of the cylinder 102, as in the operation firstdescribed. Just before the fourth sheet taken by the grippers 27 arrivesin position to be folded between the rolls'13 14, the leading end of thefirst sheet,whieh has been directed into the bite of the tapes 4 8, asjust described,

will emerge from beneath the guides 43, and

be taken by the grippers 25, and will,'as the blade 24 arrives in properposition, be folded :between the rolls 15 16, thus receiving athirdfoldat right angles to the second and parallel to the first, and thusthe operation will continue to be repeated, the sheets being deliveredto the carrier or fly 103 and laid upon the tapes 47, as alreadydescribed. If it is desired that the product shall consist of two ormore full sheets associated together and folde" as just described, itisonly necessary to provide means by which two or moresheets will beassociated before they are presented to the cylinder 102, and) this maybe done either by printing upona double or triple width web, which isafterward split, and has its sections associated before they arepresented to the cutting-cylinders, or by printing upon a single-widthweb, and associating the succeeding sheets by any ofthe well-knownmechanisms for that purpose. If it is desired that the product shallconsist'of half-sheets IOO folded once transversely, thecutting-cylinders 101 will be provided with two cuttingblades, so as tosever the web into sheets of one-half the ordinary length, the grippers27 will be rendered inoperative, and the grippers 26 willbe renderedoperative; The cam which operates the grippers 25 will be shifted sothat said grippers, instead of being"cl osed to grasp the sheetas itemerges from beneath the guides 43, will be closed to grasp it as itarrives upon the cylinder, the swinging arms 30'will be shifted to theposition shown in Fig. 2, and secured there by the lever 74, the pulleys33 39 will be soadj usted as to properly regulate the length of thetapes 5 6, and the switch 56 will be shifted to the position shown inFigs. 1 and 2; When the leading end of the first halfsheet arrives uponthe cylinder 1.02, it will be taken by the grippers 26, and will becarried forward upon the cylinder until the folding blade 23 arrives inposition to fold the same between the rolls 13 14, at which'time it willbe released by the grippers and folded between said rolls by said blade,as shown in Fig. 2, after which it will pass forward between the tapes 58, and be directed by the switch56 into the bite of the tapes 5 6, to bepresented to the under side of the cylinder. As the be released by thegrippers and folded between said rolls by said blade. In the meantime,however, the first half-sheet, which was folded between the rolls 13 '14and directed into the bite of the tapes 5 6, will have emerged frombeneath the guides 43 just in the rear of the fold-line of the secondhalf-sheet, which has been taken by the grippers 25, so that as saidsecond half-sheet is folded between the rolls 15 16 by the blade 24 thefirst half-sheet, underlying the same, as shown in Fig. 2, will bedirected therewith between said rolls, so that the two half-sheets willbe associated one upon the other and pass forward together between thetapes 6 7 to the grippers of the carrier or fly 103, and so theoperation will continue to be repeated, the alternate half-sheets beingtaken by the grippers 26 25, and folded by the blades 23 24, anddelivered in pairs to the fly. By this means it will be seen that thehalf-sheets are delivered folded to the same dimensions as the fullsheets, and that this is accomplished without causing any of the partsof the apparatus to perform any greater number of operations, or tooperate with any greater rapidity than when delivering full sheets.

As before stated, the longitudinal folder 104 may be so arranged thatthe rolls 63 64, instead of being at right angles to the cylinder 102,will be parallel with said cylinder. Such an arrangement of the folderis shown in Figs. 5 to 8, inclusive.

In the organization first described it is necessary to arrange theturning-bar 65 so as to act upon the sheets after they have received thelongitudinal fold; but when the rolls 63 64 are placed parallel with thecylinder 102 it is necessary to arrange the turning-bar so as to actupon .the sheets before they receive their longitudinal fold. As aconsequence of this difference in the arrangement of the folder, rolls,and turning-bar, the tapes 2 3, instead of passing directly from thepulleys 19 across the surface of the folder, pass forward around theturning-bar 65, (see Fig. 6,) and thence laterally around pulleys 7 7,(see Figs. 5 and 8,) located just above the base of the folder. Fromthese pulleys the tapes 2 pass across the face of the folder and aroundone of its turning-edges, and thence inward between the rolls 63 64,from which point they pass around the pulley 67, (see Fig. 5,)returning, as in the organization already described, around the pulleys68 69. The tapes 3 pass across the face of the folder and around itsopposite turning-edge, from which point they pass inward and meet thetapes 2, and together with said tapes pass between the rolls 63 64, fromwhich point they return around skew-pulleys 72 and the pulleys 68 69.

(Jo-operating with the tapes 2 3 to convey the sheets from the pulleys57 to the turningbar 65 are a series of stationary guides, 76, which arelocated directly beneath the tapes, as best shown in Fig. 6, and havetheir forward ends secured to the bar 65, while their rear ends aresupported upon a transverse bar, 84, secured to the bar 65 and the frameof the machine. A similar set ofguides, 85, running at right angles tothe guides 76 and supported thereby, are arranged to co-operate with thetapes 2 3 to convey the sheets from the turningbar to the pulleys 77, asalso shown in Fig. 6.

Cooperating with the tapes 2 3 to convey the sheets around the pulleys77 and onto the surface of the folder 104, are a series of shortsupplemental tapes, 81, which pass around pulleys 78, located directlyabove the pulleys 77; thence downward around the pulleys 77 and inwardaround pulleys 79, located just below said pulleys 7 7 returning aroundpulleys 80, as shown in Fig. 8. It will be ob served that in thisorganization the guides 86 87, which co-operate with the tapes 2 toconvey the sheets from the rolls 63 64 to the pulleys 60 67, aredispensed with, a series of supplemental tapes, 82,which pass around theroll 64 by the side of the tapes 2 3, and thence around pulleys locatedat the sides of the pulleys 60 42, returning around pulleys 83, beingused in their stead.

The operation of the organization just described is substantially thesame as that already explained in connection with the other figures ofthe drawings, and consequently a very brief description will suffice.The switch 56 being turned to the position shown in Fig. 5, the sheetsfolded between the rolls 13 14 will pass forward between the tapes 4 8,from which they will be taken by the tapes 2 3 and carried along theguides 76 and around the turningbar 65. After passing the bar 65 theywill be conveyed beneath the guides 85, by the tapes 2 3, into the biteof the tapes 2, 3, and 81, by which theywill be carried downward aroundthe pulleys 77 onto the face of the folder 104, and from thence by thetapes 2 3 across the face of the folder and between the rolls 63 64,where they will receive a longitudinal fold, as already stated, afterwhich they will pass into the control of the tapes 2 82, to be conveyedto the tapes 5 6, by which they will be presented to the bottom of thecylinder 102,to receive a third fold ,in the manner already described.

Although the system of taping herein shown and described is regarded,all things considered, as the best for giving the required movements tothe sheets, yet it will readily be understood that it may be varied inmany of its details without departing from the invention. If preferred,the cutting-cylinders 100 101 may be dispensed with and the unseveredweb led directly to the folding-cylinder 102. When the apparatus is thusorganized, the cylinder 102 will be provided with suitablecuttinggrooves and with a co-operating cylinder carrying suitablesevering-knives, and, there being no workingspaces provided between thesheets, impaling-pins will be used in place of the grippers 25 26 27.The cylinder 102, in-

stead of being of a circumference equal to the length of a full sheetplus one of the workingspaces between the sheets, will, in suchcase, '1be of a circumference equal to only the length of a sheet, and thelength of the various pathways through which the sheets .pass will ofcourse be so adj ustedv that the sheets will be presented to thecylinder 102 in proper position to receive their final fold.

It is of course to be understood that any of the other well-known formsof mechanism for piling the sheets may be used instead of the formherein shown, if preferred.

The frame-work for supporting the various parts of the apparatus, aswell as the gears for driving the many parts of the same, have for themost part been omitted in the drawings, as such parts can be readilysupplied by any ordinary intelligent mechanic.

The mechanism hereinbefore described is that which embodies theinvention in what I regard as the best form; but it may be varied withinwide limits without departing from some of the most-important featuresof the invention. The mechanism for imparting the longitudinal fold,instead of being of the form shown, may consist ofapair-of folding-rollsand an oscillating or reciprocating blade, and the folding-rolls may insuch case be arranged either parallel with or at right angles to thecylinder 102. If the rolls are arranged parallel with the cylinder 102,the turning-bar will be arranged to act upon the sheets before they arepresented to the rolls, while if the rolls are arranged at right anglesto the cylinder the turning-bar will be arranged to act upon the sheetsafter they have passed the rolls. When the mechanism for imparting thesecond or longitudinal fold is of this character, the tapes forconducting the sheets from and returning them to the cylinder 102 willof course have to be arranged in a manner somewhat different from thatshown; but this can be readily done by any one familiar with this classof machinery. In this case, also, the third fold, instead of beingparallel with the first and at right angles to the second, will beparallel with the second and at right angles to the first. This order ofmaking the folds will not in most cases be found as desirable as thatfirst described, and consequently it is preferable that the longitudinalfolding mechanism should be of the character shown.

The mechanism for imparting the first and third folds may also be of adifferent form from that shown without departing from some of theimportant features of the invention. Instead of a single cylinder, 102,which is capacitated to impart the two folds, a folding mechanism of thecharacter shown in the Letters Patent No. 269,021,before referred to,maybe employed, a switch or switches corresponding to the switch 56 beinglocated in the pathway leading from one of the folding-cylinders to theother, and so arranged that the sheets can be sent directly from thefirst to the second cylinder, or from the first cylinder to thelongitudinal folding mechanism, and then to the, second cylinder; or,when separate mechanisms are provided to impart the first and thirdfolds, such mechanisms may be of any of the ordinary forms of foldingmechanism.

From the foregoing it will be seen that the present invention consistsnot so much in specific improvements in the various mechanisms employedas in the general arrangement and combinations of mechanisms forperformingthe several operations.

What I therefore claim is- 1. The combination, with a transverse, alongitudinal, and a second transverse folding mechanism arranged to actupon the sheets in the order named, of a sheet-conveying mechanismarranged to deliver the sheets from the first to the second and thenceto the third folding mechanism, or from the first directly to the thirdfolding mechanism, all substan tially as described.

2. The combination, with two mechanisms arranged to impart parallelfolds to the sheets, of a mechanism located between the two and arrangedto impart a fold at right angles to the other two, arranged to deliverthe sheets from the first to the second and thence to the third foldingmechanism, or from the first directly to the third folding mechanism,substantially as described.

3. The combination, with two parallel transverse folding mechanisms, ofa longitudinal folding mechanism arranged to act upon the sheets/afterthe first and before the second of said transverse folding mechanisms,and a sheet conveying and turning mechanism arranged to deliver thesheets from the first to the second and thence to the third foldingmechanism, or from the first directly to the third folding mechanismwithout turning, all substantially as described.

4. The combination, with the cylinder 102, provided with two sets offolding mechanisms arranged to act alternately, of asheet-conveyingmechanism arranged to deliver the sheets folded off the cylinder by oneof said mechanisms back to the cylinder in position to be associatedwith those folded off by the other of said mechanisms, all substantiallyas described.

5. The combination, with the cylinder 102, provided with two sets offolding mechanisms arranged so as to be made to act alternately orsuccessively at pleasure, of a sheet-conveying mechanism arranged todeliver the sheets folded off the cylinder by the first of saidmechanisms back to the cylinder in position to receive a second fold bythe second of said mechanisms, all substantially as described.

.6. The combination, with the cylinder 102, provided with two sets offolding mechanisms arranged so as to' be made to act alternately orsuccessively at pleasure, of a sheet-conveying mechanism arranged todeliver the sheets folded off the cylinder by the first of saidmechanisms back to the cylinder in position to receive a second fold bythe second of said mechanisms, or to be associated with those folded 9and a sheet-conVeying mechanism ranged to act upon the sheets after thefirst and before the second of said mechanisms upon said cylinder, and asheet-conveying mechanism, by which the sheets are delivered from thefirst mechanism of the cylinder to the intermediate folding mechanism,and thence to the second mechanism of the cylinder, or directly from thefirst to the second mechanism of the cylinder, all substantially asdescribed.

9. The combination, with the cylinder 102, provided with two sets offolding mechanisms,

of the longitudinal folder 104 and a sheetconveying mechanism, by whichthe sheets are delivered from the first mechanism of the cylinder to thefolder 104, and thence to the second mechanism of the cylinder, ordirectly to the second mechanism of the cylinder, all substantially asdescribed.

10. The combination, with the cylinder 102, provided with two sets offolding mechanisms, of the longitudinal folder 104 and a sheetconveyingmechanism arranged to deliver the sheets from the first mechanism of thecylinder to the folder 104, and thence to the second mechanism of thecylinder, all substantially as described.

11. The rotating carrier or fly 103, having the grippers 51, providedwith the projections 55 upon their backs, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

LUTHER O. OROVVELL.

\Vitnesses:

J. A. HovEY, A. N. JASBERA.

